{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3712",
    "entityType": "User",
    "nonce": "0x2471d7250ad41928137b0edce0b5cce49044f660893181fa9a79e81e2689e99a",
    "signature": "0x510e4be8d5dda7d2b3e49d528024b3e7603f4b557b434c78526107c729681a3d169f8f1646f807290afaf220449eb03b57056b29465b6e40e6f0c6d56c9323f01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}